Sorry for the delay, I missed a few posts on the 16th somehow

You may be able to do it without having to use a vac (but have one handy just in case...) so try that first. It's a little tough to describe how I work them out, but I'll give it a shot anyway. Wear shorts, you're gonna kneel on the floor. Position yourself behind the wrinkle, facing the wall. Starting from either end of the wrinkle, use your fingertips to 'roll' the wrinkle towards the closest wall, working your way towards the center of the wrinkle. This is not a quick process, but as you go it should get quicker when you reach the wall it should just disappear (actually, the wrinkle should get smaller as you work it to the wall).

If you end up having to use the vac, untuck the liner from the track~ 1' and slide the hose down almost to the floor (it's a good idea to pad the end of the hose with some duct tape so you can't hurt the liner). Use duct tape to fully seal the gap where it goes behind the liner. When the wrinkles are out, refill the pool 1 -2 " and then remove the vac, tuck the liner back into the track and refill the pool the rest of the way.

If you need any more on anything I've said, just give a holler and I'll try to clarify